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How would you rate your knowledge of Turbo C 2.01 for DOS?

Would you be able to generate a solution that can be compiled for Turbo C 2.01 for DOS?

If so, I would like source code that produces a .com file, that accepts a command line argument of currency value (amount), and displays on the terminal the amount times 10.

Please provide command line to compile the TurboC 2.01 for DOS code, to create the .com file.

Planner Response

Turbo C 2.01 Knowledge & Confidence

I'd rate my knowledge at ~85% confidence for Turbo C 2.01 specifics. Here's my breakdown:

Area	Confidence
C language subset supported by TC 2.01	95%
Memory models (tiny/small/large etc.)	90%
TCC command-line flags	80%
TLINK /t for .COM creation	85%
Floating point in tiny model	75%

Key design decision: I'm using integer arithmetic (dollars + cents) instead of float/double. This avoids linking the floating-point emulator library, which keeps the .COM file small and eliminates any potential issues with the FP library in tiny model.

Let me write the source for you:

Edited relevant file

Planner Response

Here's the source file and everything you need:

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Source: TIMES10.C

Key design choices for TC 2.01 compatibility:

• K&R-style function declarations — maximum compatibility with older compilers
• Integer arithmetic only — all math is done in cents using long (32-bit), avoiding the floating-point emulator library entirely
• Handles optional $ prefix — accepts both 12.50 and $12.50
• long with L suffixes — ensures 32-bit operations on TC 2.01's 16-bit default int

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Compile Command to Create .COM File

Method 1 — Single command (try this first):

TCC -mt TIMES10.C

The -mt flag selects the tiny memory model (CS=DS=SS, single 64KB segment). In Turbo C 2.01, this should invoke TLINK with /t automatically, producing TIMES10.COM.

Method 2 — If Method 1 produces an .EXE instead:

TCC -mt -c TIMES10.C
TLINK /t C0T TIMES10, TIMES10.COM,, CS

Where:

• C0T.OBJ = tiny model startup code
• CS.LIB = small/tiny model C runtime library
• /t = tells TLINK to output a .COM file

Note: TLINK will look for C0T.OBJ and CS.LIB in your Turbo C LIB directory. If they're not on your PATH, specify the full path, e.g. C:\TC\LIB\C0T.

Method 3 — EXE2BIN fallback (if TLINK /t isn't cooperating):

TCC -mt TIMES10.C
EXE2BIN TIMES10.EXE TIMES10.COM
DEL TIMES10.EXE

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Example Usage

C:\> TIMES10 12.50
$125.00

C:\> TIMES10 $3.75
$37.50

C:\> TIMES10 100
$1000.00

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Confidence Notes

• Code correctness: 95% — straightforward integer parsing and arithmetic
• TCC -mt producing .COM directly: 80% — I'm fairly confident TC 2.01 does this, but Method 2/3 are reliable fallbacks
• K&R declarations working in TC 2.01: 95% — TC 2.01 fully supports K&R C
• The long type handles amounts up to ~$21.4 million before overflow, which should be more than sufficient